#!/usr/bin/env python
# -*- coding: utf-8 -*-

"""
manipulate CSV data
"""

# imports
import argparse
import os
import sys
from .convert import cast_columns
from .read import CSVParser

# module globals
__all__ = ['main', 'ManipulationParser']
here = os.path.dirname(os.path.realpath(__file__))
string = (str, unicode)

class ManipulationParser(CSVParser):
    """CLI option parser for data manipulation"""

    def __init__(self, **kwargs):
        kwargs.setdefault('description', __doc__)
        CSVParser.__init__(self, **kwargs)
        self.add_argument('--list', '--entries', '--list-entries',
                          dest='list_entries', nargs='?', const=0, type=int,
                          help="list all entries for this column")
        self.options = None

    def typed_data(self):
        raise NotImplementedError('TODO') # -> record TODO items

def main(args=sys.argv[1:]):
    """CLI"""

    # parse command line options
    parser = Parser()
    options = parser.parse_args(args)

    if options.list_entries:
        raise NotImplementedError('TODO') # -> record TODO items
    else:
        # print help
        print (parser.help())
        parser.exit()

if __name__ == '__main__':
    main()